10311 results about "Linear motion" patented technology

A surgical instrument and method of controlling the surgical instrument are disclosed. The surgical instrument includes a housing and an elongated shaft that extends distally from the housing and defines a first longitudinal axis. The surgical instrument also includes a firing rod disposed in the elongated shaft and a drive mechanism disposed at least partially within the housing. The drive mechanism mechanically cooperates with the firing rod to move the firing rod. A sensor senses a parameter of light reflected from the surface of the firing rod, which includes markings that change the reflectivity of the firing rod. The measurement unit determines a parameter of the motion of the firing rod, such as the position and speed of the firing rod, based on the sensed parameter of the light reflected from the surface of the firing rod.

A surgical instrument and method of controlling the surgical instrument are disclosed. The surgical instrument includes a housing and an elongated shaft that extends distally from the housing and defines a first longitudinal axis. The surgical instrument also includes a firing rod disposed in the elongated shaft and a drive mechanism disposed at least partially within the housing. The drive mechanism mechanically cooperates with the firing rod to move the firing rod. A motion sensor senses a change in the electric field (e.g., capacitance, impedance, or admittance) between the firing rod and the elongated shaft. The measurement unit determines a parameter of the motion of the firing rod, such as the position, speed, and direction of the firing rod, based on the sensed change in the electric field. A controller uses the measured parameter of the motion of the firing rod to control the drive mechanism.

A linear motion control device for use in a linear control system is presented. The linear motion control device includes a coil driver to drive a coil that, when driven, effects a linear movement by a motion device having a magnet. The linear motion control device also includes a magnetic field sensor to detect a magnetic field associated with the linear movement and an interface to connect an output of the magnetic field sensor and an input of the coil driver to an external controller. The interface includes a feedback loop to relate the magnetic field sensor output signal to the coil driver input.

A dental prophy angle includes a housing and a rotor. The housing defines a first bore and a second bore in communication with the first bore, and rotor is disposed within the second bore. The rotor includes a gearing system, and rotor includes a lock having a lock channel configured to receive a tip of a drive shaft. The housing includes a lock receiver for receiving the lock receiver permits rotation of the lock within the lock receiver and restrains linear movement of the lock in a direction substantially parallel to a rotational axis of the rotor.

The invention discloses a linear type suturing and excising device, comprising a body, a staple cartridge rack, a staple anvil, a staple cartridge, a cocking block and a knife pushing rod, wherein the staple cartridge rack, the staple anvil and the staple cartridge are arranged at the far end of the body, the cocking block is used for pushing a staple pushing piece and is arranged in a chute of the staple cartridge, the knife pushing rod pushes the cocking block to move, the staple cartridge rack is provided with a safety block for preventing secondary cocking, the safety block has a linear motion trail, the moving direction of the safety block is vertical to the moving direction of the knife pushing rod, and the safety block is arranged at the far end of the knife pushing rod and the excising knife, and is used for limiting the movement of the knife pushing rod and the excising knife from the near end of the linear suturing and excising device to the far end of the linear suturing and excising device when the linear type suturing and excising device is under the initial state and under the state of cocking completion. The linear type suturing and excising device has the beneficial effects that a doctor is effectively prevented from performing the next operation under the condition of not replacing a cocked staple cartridge, the occurrence of medical negligence is avoided, and the structure is simple and effective.

A rotational driver that comprises a interactive portion, wherein each interactive portion comprises a first extended member and a second extended member, a rotational system and a linear motion system, wherein the rotational driver permits a left or right handed surgeons to perform the surgical suturing procedure in a less complicated and more secure way by allowing more control over the suturing needle and the area to be stitched, even when the suturing area is small, deep, and / or restricted.

A low profile orthopedic device is used to fix and stabilize bones to correct anomalies in skeletal structure occurring naturally or by trauma. Bone screws are screwed into bones by application of torque. Clamps are movably attached to the screws. Each clamp includes a compression ring. A connecting rod connects several screws through slots in the clamps. The clamps are tightened to hold the rod and the heads in a pre-selected position by linear movement of the compression rings.

There is provided an activity recognition apparatus for detecting an activity of a subject. The apparatus includes: a sensor unit including a plurality of linear motion sensors configured to detect linear motions and a plurality of rotational motion sensors, the linear motions being orthogonal to each other, the rotational motions being orthogonal to each other; and a computational unit configured to receive and process signals from the sensors included in the sensor unit so as to detect an activity of the subject. The sensor unit is directly or indirectly supported by the subject with an arbitrary orientation with respect to the subject. The computational unit performs a calculation that uses the signals from both linear motion sensors and rotational motion sensors to determine the activity of the subject independent of the orientation of the sensor unit.

A low profile orthopedic device is used to fix and stabilize bones to correct anomalies in skeletal structure occurring naturally or by trauma. Bone screws are screwed into bones by application of torque. Clamps are movably attached to the screws. Each clamp includes a compression ring. A connecting rod connects several screws through slots in the clamps. The clamps are tightened to hold the rod and the heads in a pre-selected position by linear movement of the compression rings.

A pump system for an infusion system includes a linear drive (36, 36′) which minimizes the space occupied by the pump components in a portable housing (10, 10′). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14′) and lead screw (94, 94′). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a drive nut (116) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). A cap (190, 190′) couples the syringe (14, 14′) to the housing and provides an outlet for the liquid to be dispensed. In one embodiment, the cap (190′) is configured to rotate relative to the housing in one direction only, during locking. Rotational movement is also used for locking the piston (24) to the drive nut (116) against relative axial movement. In another embodiment, the cap (190′) carries a rotatable hub (330) which is connected at a first end (336) with an infusion line (191) and at a second end defines a needle (338) for piercing a closure (340) on the syringe.

Mechanisms for a control knob or other interface device providing additional degrees of freedom for the knob. One embodiment provides a rotatable knob moveable also in a lateral plane approximately perpendicular to the axis of rotation. A mechanism providing the lateral motion can include a gate member and a plunger member that engages grooves in the gate member. A rotational sensor detects a rotational position and a lateral sensor can detect a lateral position of the knob. Another embodiment provides an actuator that includes a shaft that is coaxial with the axis of rotation and which can be moved linearly along the axis of rotation with respect to actuator housing to accommodate linear motion of the knob. In another embodiment, a gear assembly including two interlocked gears is provided to transmit rotational motion from the knob to the sensor, and the interlocked gears translate with respect to each other when the knob is translated along the rotational axis.

There is provided an activity recognition apparatus for detecting an activity of a subject. The apparatus includes: a sensor unit including a plurality of linear motion sensors configured to detect linear motions and a plurality of rotational motion sensors, the linear motions being orthogonal to each other, the rotational motions being orthogonal to each other; and a computational unit configured to receive and process signals from the sensors included in the sensor unit so as to detect an activity of the subject. The sensor unit is directly or indirectly supported by the subject with an arbitrary orientation with respect to the subject. The computational unit performs a calculation that uses the signals from both linear motion sensors and rotational motion sensors to determine the activity of the subject independent of the orientation of the sensor unit.

It is an object of the present invention to provide an automated, a semi-automated, a surgeon-guided quasi-automated and / or a fully surgeon's controlled surgical system surgical system useful for performing a fully automated medical procedure within a body cavity such that faultless and quick medical procedure is obtained. Each of the surgical systems comprises: (a) at least one effecter for performing the medical procedure; (b) at least one maneuverable platform reversibly coupled with the effecter; the platform provides the effecter with a scheduled set of independent displacements selected from a group consisting of up to six (degrees of freedom) DOFs, namely linear movement along the X,Y,Z-coordinates, and radial movement around the X,Y,Z coordinates, such that the time-resolved spatial position of the effecter is defined by the up to six coordinates (three-dimensional spatial position, 3DSP); and (c) sensing and processing means.